%0 Journal Article %A G R Baker %T HARVARD MEDICAL PRACTICE STUDY %D 2004 %R 10.1136/qshc.2002.003905 %J Quality and Safety in Health Care %P 151-152 %V 13 %N 2 %U https://qualitysafety.bmj.com/content/qhc/13/2/151.full.pdf